I stood a load of telegraph poles up and placed them into sockets when they were building Bewilderwood (a kids treehouse-theme park) during Covid. The builders drove posts below ground-level with a 3 tonne machine fitted with what I now realise was one of these attachments (they put a galvanised socket on the top of these posts to receive the telegraph poles, to help avoid rotting (but I don’t think it has worked!…)).
It was a very good piece of kit!
I have serious treehouse envy not felt since I was 10
!
Venturing off subject slightly.., does anyone use augers much? I’ve a considerable amount of security fence to put up and think augering the holes out is the way to go(beats hand dig).. Digbits have the Digga ones with levelling lights on them now which looks handy. Thinking 300mm for the posts?
I use my auger a few times a year. Makes light work of fencing, sign post errecting, pergolas, decking legs, litter bins, benches - basically anything that needs a round hole! I've also used some bigger flights for tree planting, but not sure the 600mm flight I have would work in the more rocky ground up north. It does struggle a bit down in the soft south, but go steady and it gets the job done.
Mine is also a Digga, PD3 - technically too big for the 1.5 tonner but works fine. Might be a little slower maybe but that doesn't stop it digging the hole. Lift height is more of an issue with the smaller machines than flow on augers - especially if you need to use the extension to go deeper than 7-800mm which is realistically all you'll get with a standard flight.
Get the cradle hitch - I regret not getting one.
And a 4" square post needs a 300mm flight or its too tight to get the last bit of straightening up done in the hole.
Sure, the HALO system does look good, but I struggle more with the Auger deflecting off rubble in the ground, or "walking" itself off target when you first start, than I do with it not being upright. On sloped ground or banks, you often have to angle the auger to dig into the slope first, then straighten up once you have a hole going or it just slides down the bank! You'll get the hang of it - its not hard.
I've drilled through tarmac with mine several times - works a treat! So they will work their way through anything if you give them enough time. A worthwhile attachment to have in the shed I think.
And a splitter cone works well on them too for breaking up tree stumps
